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KMID : 1151820090030020023
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Journal of the Korean Society of Radiology
2009 Volume.3 No. 2 p.23 ~ p.26
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Improved Center Array-Sequensing Phase Unwrapping(ICASPU) method for reconstruction of MR phase image
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Han Yong-Hee
Kim Kang-Soo
Kim Yoon-Seok
Lee S.-H.
Jung Suk-Hee
Nam Sang-Hee
Mun Chi-Woong
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Abstract
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This study proposed an improved center array-sequencing phase unwrapping (ICASPU) algorithm. 2% agarose phantom dopped with 0.6mM/l MnCl2 was used with clinical 1.5T MRI system and commercial knee coil. Obtained k-space data(raw-data) was transmitted to PC and reconstructed into phase image with MATLAB software. Previous center array-sequence phase unwrapping algorithm wascompared with proposed ICASP algorithm using second order regression analysis. As a result, we found that the amount of error on proposed ICASPU method is less about 5 times than that of previous CASPU method. In this study, we exploit improved Center array-sequence phase unwrapping algorithm and expect to apply to images including phase informations.
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KEYWORD
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MRI, Phase unwrapping, Path following, Center array sequencing
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